Combination manual fire alarm boxes are permitted with which of the following?

Combination manual fire alarm boxes are designed to integrate both manual activation and signaling functions effectively in fire alarm systems. The key aspect of choice involving guard's signaling stations is that these combinations typically allow for coordination between manual fire alarm activation and alerting or notifying personnel who are stationed as guards.

Using a combination manual fire alarm box in conjunction with a guard's signaling station makes sense because these stations often serve the purpose of providing alerts to on-site personnel immediately so that they can respond to emergencies quickly. This can significantly enhance life safety and property protection efforts in environments where guards are stationed, as they are generally the first responders in the event of a fire alarm activation.

In contrast, using combination manual fire alarm boxes with horn/strobes or smoke detectors does not align with their functional purpose. Horn/strobes are primarily used for audible and visible alerting, while smoke detectors are designed to detect fire by sensing smoke; combining them with manual activation boxes does not leverage the benefits of integrating human intervention through a guard's signaling station. This highlights why the focus on guard's signaling stations as the appropriate pairing showcases their unique role in emergency response within fire alarm systems.